Earlier this year West Yorkshire Police warned a scam email claiming to be from them is circulating – and could give criminals access to your computer.

A screenshot of the warning screen from a purported ransomware attack

Detective Inspector Benn Kemp, of West Yorkshire Police's Cyber Crime Team, said: "Cyber crime is a rapidly expanding area and takes many different forms. The reality is however, that the vast majority of cyber crime can be prevented if people are aware of certain threats and situations where you could become a victim.

"I would urge members of the public to be on their guard when surfing the web and if you come across this message on your screen, report it to Action Fraud immediately.

There is also a section dedicated to Fraud Prevention on their website. If you receive this email you believe to be fraudulent you can report it to action fraud at www.actionfraud.police.uk